Your site's conversion rate
could be about how successful you are in selling products. Conversion can
be about other things than selling though! Also, conversion isn't the
same as SEO but they are definitely related. Optimizing for SEO and
optimizing your conversion rate aren't necessarily the same thing:
sometimes they clash. Confused yet? Don't fret, Michiel explains all in
this post!
Read SEO basics: what is conversion? »